diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index 2e1d900b88..181dee36cb 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -2,6 +2,11 @@
 # Makefile to run all tests for Vim
 #
 
+# The old-style tests (*.in) use shared filenames in the working directory
+# (test.ok, test.out, X*, viminfo), so running them in parallel causes races
+# and spurious failures.
+.NOTPARALLEL:
+
 # Use console or GUI.
 VIMPROG = ../vim
 XXDPROG = ../xxd/xxd
diff --git a/src/version.c b/src/version.c
index c1b9f298a8..a19d721d7d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    410,
 /**/
     409,
 /**/